package TestDemo;
import java.util.ArrayList;
import java.util.Collection;

/**
 * Created with IntelliJ IDEA.
 * User: happyiu
 * Date: 2022-02-15
 * Time: 16:53
 * Description:
 */
public class Test {
    public static void main(String[] args) {
        Collection collation = new ArrayList();
        collation.add("abcd");
        collation.add(12345);
    }
}
